I don’t think I want to know how he might emulate a hippo. Here are some common hippo traits that could be disturbing in a 30 yo male human:
“The hippo has neither sweat nor sebaceous glands but does have unique glands that produce a viscous red fluid, leading to the myth that hippos “sweat blood.” ”
“The large hippo is an aggressive animal; old scars and fresh, deep wounds are signs of daily fights that are accompanied by much bellowing, neighing and snorting.” Note: fights may last up to three hours.
“Hippos are unpredictable. If they are encountered away from the safety of water, anything that gets between them and their refuge may be bitten or trampled.”
Source One
“Adult bulls are extremely territorial, and one of the known ways used for demarcation of their territories, is their characteristic way of defecating, spraying the feces over a shrub or rock by a rapid flicking of their short tail.” Not at my wedding he wouldn’t.
Source Two